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John McNae

👋 Hi! I’m John McNae. I’m a passionate IT professional with a deep curiosity about how technology shapes our world. With years of hands-on experience in hardware, software, and networking, I love turning complex technical concepts into clear, practical knowledge. Driven by a constant desire to learn and share, I created this space to collect and organize valuable insights about information technology — from essential definitions to detailed how-to guides. My goal is simple: to make tech understanding accessible to everyone, whether you’re an experienced professional or just beginning your digital journey.
318 Articles

Understanding and Preventing VR Sickness: Causes, Symptoms, and Solutions

Learn what causes VR sickness, how to recognize symptoms like nausea and…

What is a PST File and How is it Used in Microsoft Outlook?

A PST (Personal Storage Table) file stores Outlook data—emails, contacts, calendar entries…

Mind-Brain Identity Theory: A Modern Philosophical Approach and Explanation

Mind-brain identity theory argues mental states are identical to brain states, linking…

What is a Product Qualified Lead (PQL) and Why is it Important in Marketing?

A Product Qualified Lead (PQL) is a prospect who has shown real…

Double Click: Meaning and Practical Use in Computing

Double-click: quickly press a mouse button twice to open files, launch programs,…

Capability Maturity Model Exam: The Role and Purpose of the CMM Methodology in Software Development

Explore how the Capability Maturity Model (CMM) guides software organizations to improve…

Big Data as a Service: The Essence and Operation of the Service

Big Data as a Service offers cloud-based storage, processing and analytics on…

Requirements Analysis: Defining the Process and Objectives for Successful Project Management

Requirements analysis aligns stakeholder needs, defines scope, and sets measurable objectives to…

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